Research On Impact Of Spacial Refuge On The Dynamical Complexity And Species Coexistence Of IGP Systems

In ecology,population dynamics,complexity and coexistence have attracted much attention.It is necessary to study the dynamic complexity of the population,to under-stand the dynamic law of the population,to better manage the ecosystem,to protect the biodiversity,to predict and manage the disease and insect pests.IGP is a system of three species with predation and competition.Spacial heterogeneity refers to the heterogeneity and complexity of spatial distribution of ecological processes and patterns.Spacial refuge is an important mechanism of spacial heterogeneity.In order to study the dynamic com-plexity and coexistence of spacial refuge for IGP systems,we constructed an IGP system with an implicit refuge and an explicit refuge IGP system with space.Using dynamic analysis,intrusion analysis,numerical simulation and other methods,we reached the fol-lowing conclusions:(1)the effect of refuge has a stabilizing effect.Our work contributes to an in-depth understanding of the role of the refuge in the ecosystem;(2)refuge can expand coexistence.To enrich and develop the theory of IGP in ecology,provide theoret-ical support for explaining species dynamics,biodiversity and biological invasion;(3)the coexistence of IGP system increases with the effect of refuge.Through the study of the spacial refuge,it plays a vital role in biodiversity and species protection.It further reveals the persistence mechanism of multigroup systems.